Which statement is the most accurate? 

a) During the 1980s, people in the Soviet Union and China who worked their own private plots were much more productive than those working on large collective farms.

b) Although economic growth has been very rapid in China since the early 1980s, the average person’s standard of living in China has barely risen.

c) Most of the Chinese have left the rural areas where they grew up to work in the cities.

d) The Chinese economy is dominated by state-owned enterprise.